Sentinel State 55-28 Unit

Oil & Gas Property in Reeves County, TX

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Property Summary

Key data points for Sentinel State 55-28 Unit

County	Reeves County, TX
Production Dates	Dec 2017 - Oct 2025
Total Oil Production	4,595,675 BBLs
Total Gas Production	45,883,848 MCF
Recent Oil Production	27,072 BBLs in Sep 2025
Recent Gas Production	588,555 MCF in Sep 2025
Wells on Property	15

Our Valuation Estimates for Sentinel State 55-28 Unit

ShaleAssessment™

Not Available

MarketMultiple™

$6,388,804 **

* Assessment based on future expected revenue
** Based on a 36 month multiple of average monthly estimated revenue

Based on a decimal interest

Sentinel State 55-28 Unit Production Graph

Aggregated production of all wells and leases associated with this property

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to oil and gas production for Sentinel State 55-28 Unit
from Dec 2017 to Oct 2025

Wells on Sentinel State 55-28 Unit

API #	Well Name	Operator	Status	County	Est. Daily Oil Prod.	Est. Daily Gas Prod.	Est. Daily Water Prod.	Latitude	Longitude
API #	Well Name	Operator	Status	County	Est. Daily Oil Prod.	Est. Daily Gas Prod.	Est. Daily Water Prod.	Latitude	Longitude
42-389-35824	SENTINEL STATE 55-28 UNIT 1H	COTERRA ENERGY OPERATING CO.	Producing	Reeves County, TX				31.577749	-103.806104
42-389-36910	SENTINEL STATE 55-28 UNIT 5H	COTERRA ENERGY OPERATING CO.	Producing	Reeves County, TX				31.577559	-103.794120
42-389-36911	SENTINEL STATE 55-28 UNIT 6H	COTERRA ENERGY OPERATING CO.	Producing	Reeves County, TX				31.577538	-103.794040
42-389-37542	SENTINEL STATE 55-28 UNIT 7H	COTERRA ENERGY OPERATING CO.	Producing	Reeves County, TX				31.577612	-103.805207
42-389-37543	SENTINEL STATE 55-28 UNIT 8H	COTERRA ENERGY OPERATING CO.	Producing	Reeves County, TX				31.577235	-103.803262
42-389-37544	SENTINEL STATE 55-28 UNIT 9H	COTERRA ENERGY OPERATING CO.	Producing	Reeves County, TX				31.577235	-103.803198
42-389-37545	SENTINEL STATE 55-28 UNIT 10H	COTERRA ENERGY OPERATING CO.	Producing	Reeves County, TX				31.577235	-103.801109
42-389-37546	SENTINEL STATE 55-28 UNIT 11H	COTERRA ENERGY OPERATING CO.	Producing	Reeves County, TX				31.577235	-103.801045
42-389-40101	SENTINEL STATE 55-28 UNIT 12H	COTERRA ENERGY OPERATING CO.	Producing	Reeves County, TX				31.577754	-103.793864
42-389-40102	SENTINEL STATE 55-28 UNIT 13H	COTERRA ENERGY OPERATING CO.	Producing	Reeves County, TX				31.577755	-103.793800
42-389-40103	SENTINEL STATE 55-28 UNIT 14H	COTERRA ENERGY OPERATING CO.	Producing	Reeves County, TX				31.577755	-103.793671
42-389-40104	SENTINEL STATE 55-28 UNIT 15H	COTERRA ENERGY OPERATING CO.	Producing	Reeves County, TX				31.577485	-103.801563
42-389-40105	SENTINEL STATE 55-28 UNIT 16H	COTERRA ENERGY OPERATING CO.	Producing	Reeves County, TX				31.577405	-103.801496
42-389-40106	SENTINEL STATE 55-28 UNIT 17H	COTERRA ENERGY OPERATING CO.	Producing	Reeves County, TX				31.577405	-103.801432
42-389-40107	SENTINEL STATE 55-28 UNIT 18H	COTERRA ENERGY OPERATING CO.	Producing	Reeves County, TX				31.577755	-103.793735

Leases included in Sentinel State 55-28 Unit

Lease #	Lease Name	Operator	County	Monthly Oil Prod.	Monthly Gas Prod.
Lease #	Lease Name	Operator	County	Monthly Oil Prod.	Monthly Gas Prod.
08-284511	SENTINEL STATE 55-28 UNIT 1H	COTERRA ENERGY OPERATING CO.	Reeves County, TX
08-286407	SENTINEL STATE 55-28 UNIT 5H	COTERRA ENERGY OPERATING CO.	Reeves County, TX
08-286409	SENTINEL STATE 55-28 UNIT 6H	COTERRA ENERGY OPERATING CO.	Reeves County, TX
08-287338	SENTINEL STATE 55-28 UNIT 7H	COTERRA ENERGY OPERATING CO.	Reeves County, TX
08-287343	SENTINEL STATE 55-28 UNIT 8H	COTERRA ENERGY OPERATING CO.	Reeves County, TX
08-287347	SENTINEL STATE 55-28 UNIT 11H	COTERRA ENERGY OPERATING CO.	Reeves County, TX
08-287348	SENTINEL STATE 55-28 UNIT 9H	COTERRA ENERGY OPERATING CO.	Reeves County, TX
08-287395	SENTINEL STATE 55-28 UNIT 10H	COTERRA ENERGY OPERATING CO.	Reeves County, TX
08-295473	SENTINEL STATE 55-28 UNIT 12H	COTERRA ENERGY OPERATING CO.	Reeves County, TX
08-295475	SENTINEL STATE 55-28 UNIT 13H	COTERRA ENERGY OPERATING CO.	Reeves County, TX
08-295476	SENTINEL STATE 55-28 UNIT 14H	COTERRA ENERGY OPERATING CO.	Reeves County, TX
08-295477	SENTINEL STATE 55-28 UNIT 18H	COTERRA ENERGY OPERATING CO.	Reeves County, TX
08-295478	SENTINEL STATE 55-28 UNIT 16H	COTERRA ENERGY OPERATING CO.	Reeves County, TX
08-295479	SENTINEL STATE 55-28 UNIT 17H	COTERRA ENERGY OPERATING CO.	Reeves County, TX
08-295586	SENTINEL STATE 55-28 UNIT 15H	COTERRA ENERGY OPERATING CO.	Reeves County, TX

Nearby Properties

These are the closest 20 properties to the Sentinel State 55-28 Unit property.

Property Name	Location	Oil Prod.	Gas Prod.	Prod. Period
Big Sky 55-16	Reeves County, TX	260 BBLs	1,774 MCF	Oct 2025
Big Sky State 55-16 Unit	Reeves County, TX	16,475 BBLs	169,782 MCF	Oct 2025
Big Timber State 57-25 Unit	Reeves County, TX	345 BBLs	4,579 MCF	Oct 2025
Castle	Reeves County, TX	345 BBLs	7,947 MCF	Oct 2025
Cleveland State 57-23	Reeves County, TX	1,514 BBLs	20,338 MCF	Oct 2025
Emigrant State 57-24 1H	Reeves County, TX	1,353 BBLs	12,117 MCF	Oct 2025
Hardcastle State 27-34-39	Reeves County, TX	18,843 BBLs	210,863 MCF	Oct 2025
Lexington 55-4-41 Unit	Reeves County, TX	1,443 BBLs	14,933 MCF	Oct 2025
Marmot 55-14 Unit	Reeves County, TX	631 BBLs	8,602 MCF	Oct 2025
North Table State 57-25 Unit	Reeves County, TX	12,875 BBLs	129,816 MCF	Oct 2025
Pagoda State 57-13 Unit	Reeves County, TX	5,677 BBLs	64,260 MCF	Oct 2025
Sheridan	Reeves County, TX	11,990 BBLs	89,945 MCF	Oct 2025
South Table State 57-25 Unit	Reeves County, TX	8,768 BBLs	78,971 MCF	Oct 2025
State Absaroka Unit	Reeves County, TX	27,369 BBLs	318,556 MCF	Oct 2025
State Jobe 40-6 Unit	Reeves County, TX	3,400 BBLs	47,040 MCF	Oct 2025
State Trooper	Reeves County, TX	8,731 BBLs	86,636 MCF	Oct 2025
Vicksburg State	Reeves County, TX	3,241 BBLs	27,713 MCF	Oct 2025
Wood State 57-26 Unit	Reeves County, TX	2,423 BBLs	45,988 MCF	Oct 2025
Wood-Dance State 26-35-38 A 1H	Reeves County, TX	5,802 BBLs	97,312 MCF	Oct 2025
Yorktown State	Reeves County, TX	7,578 BBLs	62,896 MCF	Oct 2025

Companies in the Area

These are the closest 18 companies operating near the Sentinel State 55-28 Unit property.

Company Name
Alchemist Energy, LLC
Anadarko E&P Onshore LLC
Apache Corporation
BPX Operating Company
Cimarex Energy Co
Energen Resources Corporation
EOG Resources Inc
Eqv Operating LLC
Forest Oil Corporation
Greenlake Energy Operating, LLC
Mewbourne Oil Company
Notting Hill Energy LLC
PDC Permian, Inc.
Pogo Producing Company
R K Petroleum Corp.
Resolute Natural Res. Co., LLC
TRP Operating LLC
WPX Energy Permian, LLC

Frac'ing activity on Sentinel State 55-28 Unit

API #	Well Name	Start Date	End Date	Vertical Depth	Total Water Volume
API #	Well Name	Start Date	End Date	Vertical Depth	Total Water Volume
42-389-35824	Sentinel State 55-28 Unit 1H
42-389-36910	Sentinel State 55-28 Unit 5H
42-389-36911	Sentinel State 55-28 Unit 6H
42-389-37542	SENTINEL STATE 55-28 UNIT 7H
42-389-37543	SENTINEL STATE 55-28 UNIT 8H
42-389-37544	Sentinel State 55 - 28 Unit 9H
42-389-37545	SENTINEL STATE 55-28 UNIT 10H
42-389-37545	SANDLOT STATE C113 SL
42-389-37546	SENTINEL STATE 55-28 UNIT 11H
42-389-40101	SENTINEL STATE 55-28 UNIT 12H
42-389-40102	SENTINEL STATE 55-28 UNIT 13H
42-389-40103	SENTINEL STATE 55-28 UNIT 14H
42-389-40104	Sentinel State 55-28 Unit 15H
42-389-40105	Sentinel State 55-28 Unit 16H
42-389-40106	Sentinel State 55-28 Unit 17H
42-389-40107	SENTINEL STATE 55-28 UNIT 18H

Owners of Sentinel State 55-28 Unit

Royalty Ownership data is obtained from public records

Year	Owner	Property Name	Operator
2025	CIMAREX ENERGY CO WI	SENTINEL STATE 55-28 UNIT #1	CIMAREX ENERGY
2025	CIMAREX ENERGY CO WI	SENTINEL STATE 55-28 UNIT #1	CIMAREX ENERGY
2025	CIMAREX ENERGY CO WI	SENTINEL STATE 55-28 UNIT #1	CIMAREX ENERGY
2025	CIMAREX ENERGY CO WI	SENTINEL STATE 55-28 UNIT #5	CIMAREX ENERGY
2025	CIMAREX ENERGY CO WI	SENTINEL STATE 55-28 UNIT #1	CIMAREX ENERGY
2025	CIMAREX ENERGY CO WI	SENTINEL STATE 55-28 UNIT 15	CIMAREX ENERGY
2025	CIMAREX ENERGY CO WI	SENTINEL STATE 55-28 UNIT #1	CIMAREX ENERGY
2025	CIMAREX ENERGY CO WI	SENTINEL STATE 55-28 UNIT #1	CIMAREX ENERGY
Displaying 8 of 135 Owners -- Full Ownership Data Available for Subscribers Only

Oil & Gas Sales on Sentinel State 55-28 Unit

Lease #	Lease Name	Reporting Period	Product	Volume	Value	Gross Price	Purchaser	Producer
Lease #	Lease Name	Reporting Period	Product	Oil Volume	Oil Value	Calculated Oil Price	Purchaser	Producer
08-284511	SENTINEL STATE 55-28 UNIT 1H	Apr 2025					COTERRA ENERGY OPERATING CO.	COTERRA ENERGY OPERATING CO.
08-286407	SENTINEL STATE 55-28 UNIT 5H	Apr 2025					COTERRA ENERGY OPERATING CO.	COTERRA ENERGY OPERATING CO.
08-286409	SENTINEL STATE 55-28 UNIT 6H	Apr 2025					COTERRA ENERGY OPERATING CO.	COTERRA ENERGY OPERATING CO.
08-287338	SENTINEL STATE 55-28 UNIT 7H	Apr 2025					COTERRA ENERGY OPERATING CO.	COTERRA ENERGY OPERATING CO.
08-287343	SENTINEL STATE 55-28 UNIT 8H	Apr 2025					COTERRA ENERGY OPERATING CO.	COTERRA ENERGY OPERATING CO.
08-287347	SENTINEL STATE 55-28 UNIT 11H	Apr 2025					COTERRA ENERGY OPERATING CO.	COTERRA ENERGY OPERATING CO.
08-287348	SENTINEL STATE 55-28 UNIT 9H	Apr 2025					COTERRA ENERGY OPERATING CO.	COTERRA ENERGY OPERATING CO.
08-287395	SENTINEL STATE 55-28 UNIT 10H	Apr 2025					COTERRA ENERGY OPERATING CO.	COTERRA ENERGY OPERATING CO.
08-295473	SENTINEL STATE 55-28 UNIT 12H	Apr 2025					COTERRA ENERGY OPERATING CO.	COTERRA ENERGY OPERATING CO.
08-295475	SENTINEL STATE 55-28 UNIT 13H	Apr 2025					COTERRA ENERGY OPERATING CO.	COTERRA ENERGY OPERATING CO.
08-295476	SENTINEL STATE 55-28 UNIT 14H	Apr 2025					COTERRA ENERGY OPERATING CO.	COTERRA ENERGY OPERATING CO.
08-295477	SENTINEL STATE 55-28 UNIT 18H	Apr 2025					COTERRA ENERGY OPERATING CO.	COTERRA ENERGY OPERATING CO.
08-295478	SENTINEL STATE 55-28 UNIT 16H	Apr 2025					COTERRA ENERGY OPERATING CO.	COTERRA ENERGY OPERATING CO.
08-295479	SENTINEL STATE 55-28 UNIT 17H	Apr 2025					COTERRA ENERGY OPERATING CO.	COTERRA ENERGY OPERATING CO.
08-295586	SENTINEL STATE 55-28 UNIT 15H	Apr 2025					COTERRA ENERGY OPERATING CO.	COTERRA ENERGY OPERATING CO.
08-284511	SENTINEL STATE 55-28 UNIT 1H	Mar 2025						COTERRA ENERGY OPERATING CO.
08-284511	SENTINEL STATE 55-28 UNIT 1H	Mar 2025						COTERRA ENERGY OPERATING CO.
08-284511	SENTINEL STATE 55-28 UNIT 1H	Mar 2025					COTERRA ENERGY OPERATING CO.	COTERRA ENERGY OPERATING CO.
08-284511	SENTINEL STATE 55-28 UNIT 1H	Mar 2025					COTERRA ENERGY OPERATING CO.	COTERRA ENERGY OPERATING CO.
08-284511	SENTINEL STATE 55-28 UNIT 1H	Mar 2025					ENERGY TRANSFER CRUDE MARKETING LLC	CIMAREX ENERGY CO. OF COLORADO
08-286407	SENTINEL STATE 55-28 UNIT 5H	Mar 2025						COTERRA ENERGY OPERATING CO.
08-286407	SENTINEL STATE 55-28 UNIT 5H	Mar 2025						COTERRA ENERGY OPERATING CO.
08-286407	SENTINEL STATE 55-28 UNIT 5H	Mar 2025					COTERRA ENERGY OPERATING CO.	COTERRA ENERGY OPERATING CO.
08-286407	SENTINEL STATE 55-28 UNIT 5H	Mar 2025					COTERRA ENERGY OPERATING CO.	COTERRA ENERGY OPERATING CO.
08-286409	SENTINEL STATE 55-28 UNIT 6H	Mar 2025						COTERRA ENERGY OPERATING CO.